Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1984-01-16
1987-01-06
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307355, 307494, 307529, 328150, 332 9T, H03K 3017, H03K 504, H03K 700
Patent
active
046348921
ABSTRACT:
A circuit is shown for pulse width modulating the output of a voltage controlled oscillator without introducing any oscillator frequency or amplitude (slope) modulation. A summing circuit is combined with a comparator and provided with inputs that accommodate differential sum/difference inputs, an error input and a ramp input from the oscillator or other source. The ramp and error signals are combined differentially to pulse width modulate the comparator output and pulse width modulation can also be achieved via the sum/difference inputs in a differential relationship.
Davis Walter R.
Isbell Tim D.
Callahan Timothy P.
Miller Stanley D.
National Semiconductor Corporation
Winters Paul J.
Woodward Gail W.
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